Renting out rooms in a home I live in?

I purchased a house at the end of 2021 that I planned to have roommates in.  It was just me in there until April and from that point on, I had 1-3 roommates each month paying rent.  I paid all utilities.  I have a formula to add up the utilities and divide them by the number of people so I think I am good there. 

 

How do I deal with the mortgage interest and property taxes?  Last year I had no renters and just did them as a homeowner as my interest and taxes are substantial.